The paper describes experimental L-band ground reflectivity measurement using noise radar demonstrator working as a
scatterometer. The radar ground return is usually described with a scattering coefficient, a quantity that is independent
from the scatterometer system. To calculate the coefficient in a function of incidence angle, range profile values obtained
after range compression were used. In order to improve dynamic range of the measurement, antenna cross-path
interference was removed using lattice filter. The ground return was measured at L band both for HH and VV
polarizations of radar wave as well as for HV and VH crosspolarizations using log-periodic antennas placed at a 10 m
high mast directed towards a meadow surface. In the paper the theoretical considerations, noise radar setup,
measurement campaign and the results are described.
|